People answer questions either online or by speaking to an advice centre about their energy use.

The amount of C02 their homes produce is calculated and advice given on how to reduce pollution and save money.

Mr Blair said people could take action against global warming themselves.

"People actually sense the climate change," he said. "It doesn't matter which part of the world you're in, their climate in the past few years has been changing and is different and you know this is urgent.

"And the interesting thing is we could do something about it. The question is have we got the will to do it?

"Now I'm trying to say for governments we've got to do this, also let's try and enable the individual to make their contribution too."